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Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability

Author

Listed:
  • Maochun Li

    (Tianjin Navigation Instruments Research Institute)

  • Yizhi Sun

    (Jinan University
    Jinan University
    Linfiber Technology (Nantong) Co. Ltd.)

  • Shoufei Gao

    (Jinan University
    Jinan University
    Linfiber Technology (Nantong) Co. Ltd.)

  • Xiaoming Zhao

    (Tianjin Navigation Instruments Research Institute)

  • Fei Hui

    (Tianjin Navigation Instruments Research Institute)

  • Wei Luo

    (Tianjin Navigation Instruments Research Institute)

  • Qingbo Hu

    (Jinan University
    Jinan University)

  • Hao Chen

    (Jinan University
    Jinan University)

  • Helin Wu

    (Jinan University
    Jinan University)

  • Yingying Wang

    (Jinan University
    Jinan University
    Linfiber Technology (Nantong) Co. Ltd.)

  • Miao Yan

    (Tianjin Navigation Instruments Research Institute
    Nanjing University of Science and Technology)

  • Wei Ding

    (Jinan University
    Jinan University
    Linfiber Technology (Nantong) Co. Ltd.
    Pengcheng Laboratory)

Abstract

We present a groundbreaking navigation-grade interferometric air-core fibre optic gyroscope (IFOG) using a quadrupolar-wound coil of four-tube truncated double nested antiresonant nodeless fibre (tDNANF). This state-of-the-art tDNANF simultaneously achieves low loss, low bend loss, single-spatial-mode operation, and exceptional linear polarization purity over a broad wavelength range. Our 469 m tDNANF coil demonstrated a polarization extinction ratio (PER) of ~20 dB when illuminated by an amplified spontaneous emission (ASE) source spanning 1525-1565 nm. Under these conditions, the gyro archives an angular random walk (ARW) of 0.00383 deg h−1/2 and a bias instability (BI) drift of 0.0017 deg h−1, marking the first instance of navigation-grade performance in air-core FOGs. Additionally, we validated the low thermal sensitivity of air-core FOGs, with reductions of 9.24/10.68/6.82 compared to that of conventional polarization-maintaining solid-core FOGs of the same size across various temperature ranges. These results represent a significant step towards long-standing promise of high-precision inertial navigation applications with superior environmental adaptability.

Suggested Citation

  • Maochun Li & Yizhi Sun & Shoufei Gao & Xiaoming Zhao & Fei Hui & Wei Luo & Qingbo Hu & Hao Chen & Helin Wu & Yingying Wang & Miao Yan & Wei Ding, 2025. "Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58381-6
    DOI: 10.1038/s41467-025-58381-6
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    References listed on IDEAS

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    1. John M. Fini & Jeffrey W. Nicholson & Brian Mangan & Linli Meng & Robert S. Windeler & Eric M. Monberg & Anthony DeSantolo & Frank V. DiMarcello & Kazunori Mukasa, 2014. "Polarization maintaining single-mode low-loss hollow-core fibres," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
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